JP4901562B2 - Lens feeding device - Google Patents

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens feeding device in an optical system device, and more particularly to a focus adjustment mechanism of a lens unit assembled in a mobile phone having a camera function, and enables focusing at a normal shooting position, a hyperfocus position, and a macro shooting position The present invention relates to a lens feeding device.

  In recent years, there has been known a camera function that can be selected between normal shooting and macro shooting as a function of a camera mounted on a mobile phone. As a macro-photographing lens feeding device for such a camera-equipped mobile phone, the applicant of the present application disclosed in Patent Document 1 a holder in which a CCD or the like is incorporated, a lens barrel in which a lens unit incorporated in the holder is incorporated, and this mirror. Consists of a feeding ring for screwing the tube, an elastic body interposed between the holder and the feeding ring to prevent the feeding ring from rattling, and an operation knob attached to the feeding ring. By rotating integrally with the knob, the feeding ring is moved forward and backward (up and down) in the optical axis direction by screwing the female screw of the holder and the male screw of the feeding ring to switch between normal photography and macro photography. A macro shooting lens feeding device has been proposed.

JP 2003-337279 A

  In recent years, cameras mounted on mobile phones have become increasingly high-performance due to the speeding up of technological evolution, and specifications such as the number of pixels have become the same as those of general digital cameras. The evolution of high-performance, high-function, and low-profile camera functions in mobile phones is steadily progressing, and further performance improvements are required. As the number of pixels of such cameras increases, the focal length also decreases. However, the shorter the focal length of the camera lens, the wider the depth of field, that is, the area that appears to be in focus.In particular, in the normal shooting mode, the hyperfocal distance and the closest distance become longer naturally. End up. For this reason, even if an area that appears to be in focus in the macro shooting mode is included, an out-of-focus range occurs between the closest distance in the normal shooting mode and the depth on the back side in the macro shooting mode. As in Patent Document 1, a distance that is out of focus can be obtained only by switching between two steps of normal shooting and macro shooting. For this reason, while the technological evolution of the camera enables clearer photography, unclear pictures that are not intended by the user are taken, even though the user is shooting with the intent of focusing. It can happen.

  The present invention has been made in view of the above-described problems, and enables switching of shooting modes at a normal shooting position, a hyperfocal position, and a macro shooting position, and enables accurate focusing in each shooting mode. An object of the present invention is to provide a lens feeding device that can be used.

This onset Ming, a lens barrel having a lens unit, a feeding ring for holding the lens barrel, a holder for movably supporting the feeding ring to rotatably and the optical axis direction, the feeding ring on the holder 3 or more stepped cam surfaces having different heights are formed on one contact surface of the feeding ring and the holder, and the other is engaged with the cam surface. A possible contact portion is formed, and by rotating the feeding ring, any one of the cam surfaces is engaged with the contact portion, and at least one of the normal shooting mode, the overfocus mode, and the macro shooting mode is engaged. This is a lens feeding device capable of selectively switching the focus in the photographing mode.

With this configuration, the feeding ring assembled to the holder is rotatably held along the holder, and is disposed between the cover and the holder so as to be movable in the optical axis direction. At this time, the contact portion formed on one contact surface of the feeding ring and the holder engages with any one of the plurality of cam surfaces formed on the other, and the relationship between the lowest cam surface and the contact portion. When the focal length of the lens unit is correct at the normal shooting position, and when the highest cam surface is engaged with the contact portion, the focal length of the lens unit is correct at the macro shooting position. The lens unit is in focus at the overfocus shooting position when the cam surface and the contact portion at the intermediate height are engaged, and the engagement between each cam surface and the contact portion is switched. In this way, focusing at the normal shooting position, the hyperfocal shooting position, and the macro shooting position becomes possible.

The present onset Ming, to form a operating knob on the feeding ring, by rotating the feeding ring by the operation knob, selectively in the normal shooting mode and any shooting mode hyperfocal mode and macro mode And a lens feeding device provided with a click ring on the outer periphery of the feeding ring for positioning and holding the feeding ring with respect to the holder when the photographing mode is switched.

Thus, by rotating the feeding ring with the operation knob, the contact portion formed on one contact surface of the feeding ring and the holder is engaged with any one of the plurality of cam surfaces formed on the other. Focusing at the normal shooting position, overfocus shooting position, and macro shooting position is possible, and the cam surface and the contact portion correspond to the normal shooting position, overfocus shooting position, and macro shooting position by the click ring. The feeding ring can be positioned and held in the engaged state.

The present onset Ming, the feeding ring to either of the click ring and cover as a means for positioning and holding the, form a concave engaging receiving portion corresponding to the position of the feeding ring of the each imaging mode, The other is a lens feeding device provided with an engagement protrusion that engages with the engagement receiving portion.

More thereto, by the engagement of the engagement receiving portion and the engaging projection to be formed on click ring and the cover, the normal shooting position, hyperfocal imaging position, to position and hold the feeding ring at each imaging position of the macro photographing position Is possible.

That is, the lens feeding device according to claim 1 of the present invention includes a lens barrel having a lens unit, a feeding ring for holding the lens barrel movably supporting the feeding ring to rotatably and the optical axis direction A holder for holding the feeding ring on the holder, and forming at least three stepped cam surfaces having different heights on a contact surface of the feeding ring and the holder. A contact portion engageable with the cam surface is formed on the other side, and the cam surface of each of the cam surfaces is engaged with the contact portion by rotation of the feeding ring, so that at least the normal photographing mode In the lens feeding device in which the focus in either the overfocus mode or the macro shooting mode can be selectively switched, the feeding ring is positioned with respect to the holder when the shooting mode is switched. A click ring for holding is assembled to the outer periphery of the feeding ring so as to be freely movable up and down, and as a means for holding and positioning the feeding ring at the time of switching the photographing mode, either the click ring or the cover, A concave engagement receiving portion corresponding to the position of the feeding ring in each of the photographing modes is formed, and on the other side, an engagement protrusion that engages with the engagement receiving portion is provided, and the click ring and the holder An elastic body is interposed therebetween, and the elastic ring urges the feeding ring toward the holder, and the click ring is moved so that the engagement receiving portion and the engagement protrusion are always engaged. It is characterized by being biased toward the cover side.

According to the configuration of the first aspect , the feeding ring is urged toward the holder side by the elastic body interposed between the click ring and the holder, and the contact portion is reliably pressed against any one of the cam surfaces. In addition, when the contact portion and the cam surface are engaged, the click ring presses the engagement protrusion against the engagement reception portion by the elastic body in a state where the engagement protrusion is engaged with the engagement reception portion. Thus, the escape of the engagement protrusion from the engagement receiving portion is restricted. Then, when the feeding ring is rotated, the click ring descends against the urging force of the elastic body, the engagement receiving part comes out from the engaging projection, and the rotation of the feeding ring causes the contact part and the other cam surface to move. At the time of the engagement, the engaging protrusion engages with the adjacent engaging protrusion, and the position of the feeding ring can be held in a state where the cam surface and the contact portion are engaged.

The lens feeding device according to claim 2 of the present invention is characterized in that the lens feeding device is assembled to a mobile phone.

With the configuration of the second aspect , as a camera function incorporated in the mobile phone, it is possible to accurately perform focusing at each of the photographing positions of the normal photographing position, the hyperfocus photographing position, and the macro photographing position.

According to lenses feeding device of the present invention, a lens barrel having a lens unit, a feeding ring for holding the lens barrel, a holder for movably supporting the feeding ring to rotatably and the optical axis direction, The holder is provided with a cover for holding the feeding ring, and three or more stepped cam surfaces having different heights are formed on one contact surface of the feeding ring and the holder, A contact portion that can be engaged with the cam surface is formed, and any one of the cam surfaces is engaged with the contact portion by rotation of the feeding ring, so that at least a normal photographing mode, a hyperfocus mode, and Since the focus in any one of the macro shooting modes can be selectively switched, it is possible to accurately focus in each shooting mode and to avoid a reduction in shooting performance.

Further, according to this onset Ming lens feeding device, to form a operating knob on the feeding ring, by rotating the feeding ring by the operation knob, one of the normal mode and the hyperfocal mode and macro mode Each of the shooting modes is provided with a click ring for positioning and holding the feeding ring with respect to the holder at the time of switching the shooting mode. In this case, the contact portion can be accurately positioned and held in a state where any one of the plurality of cam surfaces is engaged.

Furthermore, according to the lenses feeding device of the present invention, the feeding ring to one of the click ring and cover as a means for positioning and holding a concave corresponding to the position of the feeding ring of the each imaging mode engagement The receiving portion is formed, and the other is provided with an engaging protrusion that engages with the engaging receiving portion. Therefore, in each photographing mode, the engaging protrusion is engaged with the engaging receiving portion. Positioning and holding can be accurately performed in a state where the contact portion is engaged with any one of a plurality of cam surfaces.

Furthermore, according to the lenses feeding device of the present invention, the click ring, the feeding assembled vertically movable in a state prevented from rotating on the outer circumference of the ring, an elastic body is interposed between the holder and the click ring, The elastic body biases the payout ring toward the holder and the click ring is biased toward the cover. Therefore, the elastic body interposed between the click ring and the holder causes the payout ring to The backlash can be suppressed, and the abutting part can be reliably pressed against any of the plurality of cam surfaces, and the click ring and the cover are formed when the abutting part and the cam surface are engaged. Due to the engagement between the engaging projection and the engagement receiving portion, the feeding ring is inadvertently rotated via the click ring, and the photographing mode is not intended by the user. It is possible to prevent an alternative Ri.

Furthermore, according to the lenses feeding device of the present invention, the lens feeding device, because assembled to the mobile phone, without using a complicated mechanism such as auto-focus, in each imaging mode, accurately performing the focusing Can do.

  Embodiments of the present invention will be described based on examples with reference to the drawings. FIG. 1 is an exploded perspective view of a lens feeding device showing an embodiment of the present invention, FIG. 2 is a perspective view of the lens feeding device assembled, FIG. 3 is a plan view of the lens feeding device, and FIG. FIG. 5A is a plan view of the holder, FIG. 5A is a front view of the holder, FIG. 6 is a sectional view of the feeding ring, FIG. 7 is a front view of the feeding ring, and FIG. 9 is a plan view of the click ring, FIG. 9 is a cross-sectional view of the click ring, FIG. 10 is a front view with a part of the cover cut away, and FIG. 11 is a bottom view of the cover.

  In the embodiment of the present invention, the lens taking-out device for macro photography includes a holder 1 in which an image pickup device such as a CCD is incorporated, a lens barrel 10 in which a lens unit 7 is incorporated, and position adjustment of the lens barrel 10 in the optical axis direction. The feeding ring 15 that can be held and a cover 20 that holds the feeding ring 15 in the holder 1 are configured. These components are integrally molded products made of resin.

  The holder 1 is a base of the lens feeding device, and includes a frame-like mounting portion 2 that supports the feeding ring 15 as shown in FIG. 5, and is located at a corner of the mounting portion 2 and the cover 20. The four boss portions 3 for fixing are integrally formed. In addition, a ring-shaped guide tube portion 5A and an arc-shaped guide wall portion 5B for rotatably guiding the feeding ring 15 are formed inside the placement portion 2 and each boss portion 3, and this ring shape is formed. The feeding ring 15 is rotatably held along the guide tube portion 5A and the guide wall portion 5B, and is positioned between the cover 20 fixed to the boss portion 3 and the placement portion 2 of the holder 1. Thus, the feeding ring 15 is disposed so as to be movable in the optical axis direction. Further, an opening 6 is formed in the mounting portion 2 so as to be located inside the guide tube portion 5A.

  As shown in FIG. 6, the feeding ring 15 has a cylindrical portion 16 for incorporating the lens barrel 10, and is formed on the outer peripheral surface of the lens barrel 10 on a female screw 16 </ b> A formed on the inner peripheral surface of the cylindrical portion 16. The male screw 10A is screwed. Further, the mounting portion 2 of the holder 1 is formed with step-shaped first, second, and third cam surfaces 4A, 4B, and 4C for adjusting the height of the feeding ring 15 in three stages. A contact portion 17 that engages with the first, second, and third cam surfaces 4A, 4B, and 4C is formed so as to protrude downward from the lower end portion of the feeding ring 15. As shown in FIG. 5 and the like, the first, second, and third cam surfaces 4A, 4B, and 4C are formed on four sides of the square-shaped holder 1, respectively, and these first, second, and third cam surfaces are formed. As shown in FIGS. 6 and 7, the abutting portions 17 that engage with 4A, 4B, and 4C are projected from the lower end portion of the cylindrical portion 16 at intervals of 90 degrees. Further, an operation knob 18 is integrally formed on the cylindrical portion 16 of the feeding ring 15 so as to project outward from the cover 20, and the feeding ring 15 is rotated by turning the operation knob 18. As a result, the contact portion 17 engages with any one of the first, second, and third cam surfaces 4A, 4B, and 4C. A click ring 30 for holding the feeding ring 15 is attached to the feeding ring 15 when the contact portion 17 is engaged with any of the first, second, and third cam surfaces 4A, 4B, and 4C. It has been.

  As shown in FIGS. 8 and 9, the click ring 30 is formed in a ring shape so as to be fitted to the outside of the cylindrical portion 16 of the feeding ring 15, and the operation knob 18 of the feeding ring 15 from the outer periphery thereof. A pair of left and right presser pieces 31 that sandwich the handle are integrally formed. The distance between the presser pieces 31 is substantially the same as the width of the operation knob 18, and extends downward along the operation knob 18 so that the click ring 30 can be guided to move up and down. As a result, the click ring 30 is externally mounted on the cylindrical portion 16 of the feeding ring 15, and the operation knob 18 is sandwiched between the pressing pieces 31 from both sides, whereby the click ring 30 is prevented from rotating with respect to the feeding ring 15. While being held in a state, the click ring 30 is assembled to the feeding ring 15 so as to be movable up and down. Further, three concave engagement receiving portions 32 are formed on the upper edge of the click ring 30 so as to correspond to the distances between the first, second, and third cam surfaces 4A, 4B, 4C. The click ring 30 is positioned and held with respect to the cover 20 by the engagement between the engagement receiving portion 32 and an engagement protrusion of the cover 20 described later. Thus, by positioning and holding the click ring 30, the position of the feeding ring 15 is held via the click ring 30, and the abutting portions 17 of the feeding ring 15 are connected to the first and second of the holder 1. The third cam surfaces 4A, 4B, and 4C are held in an engaged state.

  The cover 20 includes a flat plate portion 21 that holds down the feeding ring 15 and side wall portions 22 that are suspended from the periphery of the flat plate portion 21 so as to face each other. The flat plate portion 21 of the cover 20 is formed with an opening 23 where the lens barrel 10 faces, and an elastically deformable engagement protrusion that is positioned at the periphery of the opening 23 and engages with the engagement receiving portion 32. The part 24 is integrally formed downward. The side wall 22 of the cover 20 is formed with a locking hole 26 that engages with a hook 25 formed on the outer peripheral surface of the holder 1. In FIG. 3, reference numeral 27 denotes a hole for forming the engaging protrusion 24 on the flat plate portion 21. A flange portion 15A is formed on the periphery of the lower end portion of the feeding ring 15, and a coil spring 28 is interposed between the flange portion 15A and the click ring 30 as an elastic body. The coil spring 28 urges the feeding ring 15 downward so as to press the contact portion 17 of the feeding ring 15 against the first, second, and third cam surfaces 4A, 4B, and 4C of the holder 1, and click ring The click ring 30 is urged upward so as to press the engagement receiving portions 32 of the 30 against the engagement protrusions 24 of the cover 20.

  Next, the first, second, and third cam surfaces 4A, 4B, and 4C formed on the holder 1 will be described with reference to FIGS. As shown in FIG. 5A, the first, second, and third cam surfaces 4A, 4B, and 4C are formed in a stepped manner in the clockwise direction from the upper edge of the mounting portion 2 of the holder 1 in the clockwise direction. . The heights h1, h2, and h3 from the lower end edge of the holder 1 to the first, second, and third cam surfaces 4A, 4B, and 4C are 0.55 mm for the first cam surface 4A and the second cam surface. 4B is set to 0.56 mm, and the third cam surface 4C is set to 0.68 mm. The first cam surface 4A is the normal shooting position, the second cam surface 4B is the overfocus shooting position, and the third cam surface 4C is the macro shooting. Each corresponds to a position. That is, when the operation knob 18 of the feeding ring 15 is operated to rotate the feeding ring 15 in the clockwise direction, the abutting portions 17 of the feeding ring 15 sequentially turn the first, second, and third cam surfaces of the holder 1. Ride on 4A, 4B, 4C and switch to normal shooting mode, overfocus shooting mode, and macro shooting mode.

  The assembly procedure in the present embodiment configured as described above will be described. First, after the coil spring 28 is placed on the flange portion 15 </ b> A formed on the periphery of the lower end portion of the feeding ring 15, the click ring 30 is fitted on the outer periphery of the feeding ring 15, and between the pressing pieces 31 of the click ring 30. The operation knob 18 of the feeding ring 15 is inserted. As a result, the click ring 30 is held in a non-rotating state with respect to the feeding ring 15, the feeding ring 15 and the click ring 30 rotate integrally, and the click ring 30 is movable up and down with respect to the feeding ring 15. Assembled into.

  Next, the feeding ring 15 in which the coil spring 28 and the click ring 30 are assembled is placed on the placement portion 2 of the holder 1. Here, the contact portion 17 protruding from the lower end portion of the feeding ring 15 is located between the guide tube portion 5A formed on the placement portion 2 and the guide wall portion 5B formed inside the boss portion 3. The contact portion 17 is assembled in a state where it rides on any of the first, second, and third cam surfaces 4A, 4B, and 4C. Then, the cover 20 is covered from the front side of the feeding ring 15, the engaging hole 26 formed in the cover 20 is hooked and engaged with the hook 25 formed in the holder 1, and the cover 20 is screwed to the boss portion 3. As a result, the feeding ring 15 is assembled and fixed to the holder 1. The feeding ring 15 assembled to the holder 1 is rotatably held along the guide tube portion 5A and the guide wall portion 5B of the holder 1, and is positioned between the cover 20 and the placement portion 2 of the holder 1. Thus, they are arranged so as to be movable in the optical axis direction. Further, the first, second, and third cam surfaces 4A formed on the holder 1 by the contact portion 17 of the feeding ring 15 by a coil spring 28 interposed between the flange portion 15A of the feeding ring 15 and the click ring 30. , 4B, 4C, and the engagement receiving portion 32 of the click ring 30 is pressed against the engagement protrusion 24 of the cover 20. After the feeding ring 15 is assembled in this manner, as shown in FIG. 3, the position where the operation knob 18 is most counterclockwise (shown by a solid line in FIG. 3), that is, the contact portion 17 of the feeding ring 15 is It rotates to the position where it engages with the first cam surface 4A formed on the holder 1. In this state, the female screw 16A of the feeding ring 15 is screwed with the male screw 14 formed on the outer peripheral surface of the lens barrel 10, and finally the focal length of the lens unit 7 is adjusted. And the lens barrel 10 are integrated. The position where the contact portion 17 of the feeding ring 15 is engaged with the lowest first cam surface 4A formed on the holder 1 is the normal photographing position a, and the click ring 30 integrated with the feeding ring 15 in this state. The engagement receiving portion 32 is engaged with the engagement protrusion 24 formed on the cover 20, and the feeding ring 15 is positioned and held at the normal photographing position a. Then, by rotating the operation knob 18 clockwise, the feeding ring 15 and the click ring 30 integrated with the feeding ring 15 rotate, and the click ring 30 descends against the coil spring 28 to form the cover 20. The engagement receiving portion 32 formed on the click ring 30 comes out from the engaging projection 24 to be moved, and the contact portion 17 of the feeding ring 15 rides on the second intermediate cam surface 4B formed on the holder 1. Accordingly, the feeding ring 15 moves in the optical axis direction, and the second engagement receiving portion 32 formed on the click ring 30 engages with the engagement protrusion 24 formed on the cover 20. Thus, the feeding ring 15 is positioned and held in a state where the contact portion 17 of the feeding ring 15 is engaged with the intermediate second cam surface 4B formed in the holder 1. The position where the contact portion 17 is engaged with the second cam surface 4B is the overfocus photographing position b. Further, when the operation knob 18 is turned clockwise, the contact portion 17 of the feeding ring 15 rides on the highest third cam surface 4C formed on the holder 1, and the feeding ring 15 moves in the optical axis direction. As a result, the third engagement receiving portion 32 formed on the click ring 30 and the engagement protrusion 24 formed on the cover 20 are engaged, and the feeding ring 15 is positioned and held at the macro photographing position c. The lens unit 7 incorporated in the lens barrel 10 can obtain a focus at the normal shooting position a, the hyperfocal shooting position b, and the macro shooting position c. Note that the engagement between the contact portion 17 of the feeding ring 15 and the first, second, and third cam surfaces 4A, 4B, and 4C of the holder 1 is switched as shown in FIG. Each time the feeding ring 15 is rotated by 20 °, the feeding ring 15 is switched. In this embodiment, the distance from the subject at the normal shooting position a is set to 245 cm, the distance from the subject at the hyperfocal shooting position b is set to 85 cm, and the distance from the subject at the macro shooting position c is set to 9 cm. ing.

  As described above, in this embodiment, the contact portion 17 formed on the feeding ring 15 and the first, second, and third cam surfaces 4A, 4B, and 4C formed on the holder 1 are engaged with each other. Since switching between shooting, overfocus shooting, and macro shooting is performed, there is no trouble of focusing in overfocus shooting despite macro shooting, and it is possible to focus accurately in each shooting mode. Thus, it is possible to avoid a decrease in shooting performance. In particular, the lens payout device in this embodiment is incorporated in a mobile phone (not shown), and can accurately focus in each shooting mode without using a complicated mechanism such as autofocus. . In each photographing mode, the engagement receiving portion 32 formed on the click ring 30 and the engagement protrusion 24 formed on the cover 20 are engaged, and the contact portion 17 formed on the feeding ring 15 and the holder 1 are engaged. When any one of the first, second, and third cam surfaces 4A, 4B, and 4C to be formed is engaged, the feeding ring 15 can be accurately positioned and held in each photographing mode.

  As mentioned above, although the Example of this invention was explained in full detail, this invention is not limited to the said Example, A various deformation | transformation implementation is possible within the range of the summary of this invention. For example, in the above-described embodiment, the first, second, and third cam surfaces 4A, 4B, and 4C are provided on the holder 1 side, and the contact portion 17 is formed on the feeding ring 15, but this is the case. Conversely, the feeding ring 15 may be provided with first, second, and third cam surfaces, and the contact portion may be formed on the holder 1 side. In the above-described embodiment, the first, second, and third cam surfaces 4A, 4B, and 4C that gradually increase along the clockwise direction are formed. However, the cam surfaces gradually decrease along the clockwise direction. Alternatively, it may be formed like the third cam surface 4C, the first cam 4A, the second cam surface 4B or the second cam surface 4B, the first cam 4A, the third cam surface 4C, In short, any structure that can adjust the focal length in three stages is acceptable. Further, the biasing means is not limited to the coil spring, but may be another structure having elasticity such as a leaf spring, and the basic structure as the lens feeding device may be appropriately selected.

It is a disassembled perspective view of the lens feeding apparatus which shows one Example of this invention. It is a perspective view of the state which assembled | attached the lens feeding apparatus same as the above. It is a top view of a lens feeding apparatus same as the above. FIG. 4 is a cross-sectional view taken along line AA in FIG. FIG. 5A is a plan view of the holder, and FIG. 5A is a front view of the holder. It is sectional drawing of a feeding ring same as the above. It is a front view of a delivery ring same as the above. It is a top view of a click ring same as the above. It is sectional drawing of a click ring same as the above. It is the front view which notched a part of cover same as the above. It is a bottom view of a cover same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Holder 2 Mounting part 4A, 4B, 4C 1st, 2nd, 3rd cam surface 7 Lens unit 10 Lens tube 15 Feeding ring 18 Operation knob 20 Cover 24 Engagement protrusion 28 Coil spring (elastic body)
30 click ring 32 engagement receiving part

Claims (2)

A lens barrel provided with a lens unit, a feeding ring that holds the lens barrel, a holder that supports the feeding ring so as to be rotatable and movable in the optical axis direction, and a cover that holds the feeding ring on the holder And a contact portion that can be engaged with the cam surface on the other side, wherein three or more stepped cam surfaces having different heights are formed on one contact surface of the feeding ring and the holder. The cam ring and the contact portion are engaged with each other by the rotation of the feeding ring, and the focus in at least one of the normal shooting mode, the overfocus mode, and the macro shooting mode is set. outside but the lens feeding device which enables selectively switched, the click ring for positioning and holding said feeding ring relative to the holder when the imaging mode switching of the feeding ring As a means for positioning and holding the feeding ring when switching the shooting mode, either the click ring or the cover corresponds to the position of the feeding ring in each shooting mode. A concave engagement receiving portion is formed, and the other is provided with an engagement protrusion engaging with the engagement receiving portion, and an elastic body is interposed between the click ring and the holder. The lens is characterized in that the feeding ring is urged toward the holder and the click ring is urged toward the cover so that the engagement receiving portion and the engagement protrusion are always engaged. Feeding device. The lens feeding device according to claim 1, wherein the lens feeding device is assembled to a mobile phone .

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